I recently learned this technique from another challenge I did. I changed the challenge up a little bit.
Here is my version:
I stamped my image using Memento Tuxedo Black Ink and colored with my Copics. I then diecut my image out using the Justrite Vintage Labels 4 die that coordinated with my image. I set this aside for later.

Using a larger size scrap paper ( just smaller than my A2 cardbase for layering), I spread my spackle compound on the paper. I wanted a layer that was not too thin or thick. I let that sit for about 2 minutes. I then used my embossing folder and embossed the paper to give it texture. The image will look rough ( that's what you want). I let the image dry.

While it was drying, I cleaned up my embossing folders and embossing plates. You don't want the spackle to dry on your tools.
Once the image was dry, I sprayed the paper with Glimmer Mist. You could use any type of spray.
My colors were Black Cherry and Turquoise Blue. Again let this dry.